公开(公告)号：US06710347B1

公开(公告)日：2004-03-23

申请号：US10096227

申请日：2002-03-12

Applicant: Gideon Eden

Inventor： Gideon Eden

IPC: G01J502

CPC classification number: G01N21/3504 ,  G01N21/33 ,  G01N2021/3177 ,  G01N2201/0692 ,  G01N2201/1211 ,  G01N2201/1218

Abstract: An apparatus and method for detecting at least one component gas in a sample includes a radiation source for providing radiation along an optical path in a pre-selected spectral band having at least one absorption line of the component gas to be detected and an optical detector for detecting radiation at the optical path. A sample chamber is positioned in the optical path between the source and the optical detector to contain a quantity of a sample gas. At least one gas cell enclosing an amount of the gas to be detected is fixedly positioned in the optical path in series with the gas chamber. A mathematical relationship is determined between the detected radiation and the concentration of a sample gas filling the sample chamber.

Abstract translation: 用于检测样品中的至少一种组分气体的装置和方法包括：辐射源，用于沿预先选择的光谱带沿着光路提供辐射，所述光谱带具有待检测的成分气体的至少一个吸收线;以及光学检测器， 检测光路上的辐射。 样品室位于源和光学检测器之间的光路中，以容纳一定量的样品气体。 包围待检测气体量的至少一个气室牢固地定位在与气室串联的光路中。 在检测到的辐射与填充样品室的样品气体的浓度之间确定数学关系。

公开(公告)号：US20040042079A1

公开(公告)日：2004-03-04

申请号：US10233940

申请日：2002-09-03

Inventor： John Phillip Ertel ,  William Richard Trutna JR.

IPC: G02B005/18 ,  G02B027/42 ,  G02B027/44

CPC classification number: G02B7/003 ,  G01N21/45 ,  G01N2021/4106 ,  G01N2201/1211 ,  G01N2201/1214 ,  G01N2201/1218 ,  G01S7/497 ,  Y10S359/90

Abstract: Optical systems are provided. One such optical system includes an optical source that propagates a source beam of light. A diffracting component is optically coupled to the optical source and is operative to receive the source beam and produce a diffracted beam. A target is located to receive the diffracted beam. Additionally, a compensating system repositions at least one of the optical source, the diffracting component, and the target in response to a detected change in refractive index of a medium through which the diffracted beam propagates so that the diffracted beam continues to be received by the target. Methods and other systems also are provided.

Abstract translation: 提供光学系统。 一种这样的光学系统包括传播源光束的光源。 衍射组件光耦合到光源并且可操作地接收源光束并产生衍射光束。 目标位于接收衍射光束。 另外，补偿系统响应于所检测到的衍射光束传播的介质的折射率变化，重新定位光源，衍射部件和靶中的至少一个，使得衍射光束继续被 目标。 还提供了方法和其它系统。

公开(公告)号：US4823008A

公开(公告)日：1989-04-18

申请号：US116987

申请日：1987-11-05

Applicant: Steven P. Sturm

Inventor： Steven P. Sturm

IPC: G01N21/31 ,  G01N21/35 ,  G01N21/86 ,  G01N33/34

CPC classification number: G01N21/86 ,  G01N21/3559 ,  G01N33/346 ,  G01N2021/3148 ,  G01N2021/8663 ,  G01N2201/1211

Abstract: Apparatus and methods for use in measuring the moisture content of heavy-grade sheets of paper during their continuous manufacture. In one aspect, means employing infrared absorption techniques for determining the fiber weight per unit area of a sheet having a fiber weight of up to 1100 grams per square meter are provided. In another aspect, means employing infrared absorption techniques including the use of two moisture absorption bands and associated moisture reference bands for calculating the average temperature of the sheet are provided. The latter aspect may be used to produce an indication of moisture weight per unit area, wherein the indication is substantially independent on changes in the average temperature, and enables accurate measurement of the moisture weight per unit area of heavy grades of paper having moisture weights of up to 450 grams per square meter. The former aspect may be employed in measuring the moisture content of heavy grade of paper having moisture weights of up to 90 grams per square meter.

公开(公告)号：US11821836B2

公开(公告)日：2023-11-21

申请号：US17327172

申请日：2021-05-21

Applicant: Analog Devices, Inc.

Inventor： Shrenik Deliwala

IPC: G01N21/3504 ,  G01N21/01

CPC classification number: G01N21/3504 ,  G01N21/01 ,  G01N2021/3513 ,  G01N2201/0636 ,  G01N2201/1211

Abstract: System and apparatus for robust, portable gas detection. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a compact package using two optical pathways. There is a need for a very compact, low-power, gas detection system for gases such as CO2, NOx, water vapor, methane, etc. This disclosure provides an ultra-compact and highly stable and efficient optical measurement system based on principals of optical absorption spectroscopy using substantially collinear pathways.

公开(公告)号：US11796458B2

公开(公告)日：2023-10-24

申请号：US17423500

申请日：2020-01-21

Applicant: FUJIKIN INCORPORATED

Inventor： Masaaki Nagase ,  Kazuteru Tanaka ,  Masahiko Takimoto ,  Kouji Nishino ,  Nobukazu Ikeda

IPC: G01N21/3504

CPC classification number: G01N21/3504 ,  G01N2201/062 ,  G01N2201/1211 ,  G01N2201/1218

Abstract: A Concentration measurement device 100 comprises: a measurement cell 4 having a flow path through which a gas flows, a light source 1 for generating incident light to the measurement cell, a photodetector 7 for detecting light emitted from the measurement cell, a pressure sensor 20 for detecting a pressure of the gas in the measurement cell, a temperature sensor 22 for detecting a temperature of the gas in the measurement cell, and an arithmetic circuit 8 for calculating a concentration of the gas based on an output P of the pressure sensor, an output T of the temperature sensor, an output I of the photodetector, and an extinction coefficient α, wherein the arithmetic circuit 8 is configured to calculate the concentration using the extinction coefficient α determined on the basis of the output of the temperature sensor 22.

公开(公告)号：US20180335440A1

公开(公告)日：2018-11-22

申请号：US16050340

申请日：2018-07-31

Applicant: PALO ALTO HEALTH SCIENCES, INC.

Inventor： Leslie E. MACE ,  Elizabeth K. SIEGELMAN ,  Debra L. REISENTHEL ,  Simon W.H. THOMAS

IPC: G01N33/84 ,  G16H20/40 ,  G01N21/78 ,  G16H40/67 ,  G16H50/20 ,  G16H40/40 ,  G16H40/63 ,  A61B5/00 ,  A61B5/08 ,  A61B5/083 ,  A61B5/103 ,  A61M21/02 ,  G16H20/30 ,  A61B5/097 ,  A61M16/00 ,  A61M21/00 ,  G01N21/31 ,  G01N21/77 ,  H04M1/725

CPC classification number: G01N33/84 ,  A61B5/0075 ,  A61B5/0816 ,  A61B5/082 ,  A61B5/0836 ,  A61B5/097 ,  A61B5/1032 ,  A61B5/4836 ,  A61B5/486 ,  A61B5/7415 ,  A61B2560/0223 ,  A61M16/0051 ,  A61M16/024 ,  A61M21/02 ,  A61M2021/0027 ,  A61M2021/0088 ,  A61M2205/3303 ,  A61M2205/581 ,  A61M2205/582 ,  A61M2230/432 ,  G01N21/3151 ,  G01N21/78 ,  G01N21/783 ,  G01N2021/7773 ,  G01N2201/0231 ,  G01N2201/062 ,  G01N2201/1211 ,  G16H20/30 ,  G16H20/40 ,  G16H40/40 ,  G16H40/63 ,  G16H40/67 ,  G16H50/20 ,  H04M1/7253

Abstract: Quantitative colorimetric carbon dioxide detection and measurement systems are disclosed. The systems can include a gas conduit, a colorimetric indicator adapted to exhibit a color change in response to exposure to carbon dioxide gas, a temperature controller operatively coupled to the colorimetric indicator and configured to control the temperature of the colorimetric indicator, an electro-optical sensor assembly including a light source or sources adapted to transmit light to the colorimetric indicator, and a photodiode or photodiodes configured to detect light reflected from the colorimetric indicator and to generate a measurement signal, and a processor in communication with the electro-optical sensor assembly. The processor can be configured to receive the measurement signal generated by the electro-optical sensor assembly and to compute a concentration of carbon dioxide based on the measurement signal. Methods for using the systems are also disclosed including providing a breathing therapy to a patient or user.

公开(公告)号：US10018520B2

公开(公告)日：2018-07-10

申请号：US15140201

申请日：2016-04-27

Applicant: Anton Paar OptoTec GmbH

Inventor： Martin Ostermeyer ,  Thomas Brandl

IPC: G01K15/00 ,  G01N21/41 ,  G01N21/27 ,  G01N21/43 ,  G01N21/552 ,  G01N21/35

CPC classification number: G01K15/005 ,  G01N21/274 ,  G01N21/4133 ,  G01N21/43 ,  G01N21/552 ,  G01N2021/3595 ,  G01N2021/414 ,  G01N2201/1211

Abstract: Measuring apparatus-calibration device for calibrating a measuring apparatus-temperature sensor of a, in particular optical, measuring apparatus, wherein the measuring apparatus-calibration device comprises a, preferably measuring apparatus-external, calibration-temperature sensor, which is traceably calibratable itself, for determining a calibration temperature in the region of a measuring surface of the measuring apparatus and a determination unit which is adapted for determining an information which is indicative for a discrepancy between a measuring apparatus-temperature which is captured by the measuring apparatus-temperature sensor in the region of the measuring surface and the calibration temperature, on whose basis the measuring apparatus-temperature sensor is calibratable.

公开(公告)号：US20180045699A1

公开(公告)日：2018-02-15

申请号：US15675300

申请日：2017-08-11

Applicant: Pyro Science GmbH

Inventor： Roland Thar ,  Jan Fischer

IPC: G01N33/00 ,  G01N21/63

CPC classification number: G01N33/0027 ,  G01N21/63 ,  G01N21/643 ,  G01N21/783 ,  G01N2021/773 ,  G01N2021/775 ,  G01N2021/7786 ,  G01N2201/1211

Abstract: A device for determining at least one condition parameter relating to a concentration or a partial pressure of an analyte in a gaseous medium, the device including at least one light source configured to emit light; at least one light receiver configured to detect the light; at least one optical sensor unit, and at least one temperature measuring device configured to measure a temperature of the optical sensor unit at least indirectly, wherein at least the light source, the light receiver and the temperature measuring device are arranged within a housing and at least the sensor unit is arranged outside of the housing, wherein at least one optical property of the sensor unit is a function of the condition parameter of the analyte, wherein light rays emitted by the sensor unit due to the sensor unit being irradiated by the light source are detectable by the light receiver.

公开(公告)号：US09841373B2

公开(公告)日：2017-12-12

申请号：US14280802

申请日：2014-05-19

Applicant: Schneider Electric Systems USA, Inc.

Inventor： W. Marcus Trygstad

IPC: G01N31/00 ,  G01N35/08 ,  G01N33/00 ,  G01N21/359 ,  G01N24/08 ,  G01R33/44 ,  G01N21/3577 ,  G01N21/84

CPC classification number: G01N21/359 ,  G01N21/3577 ,  G01N24/08 ,  G01N24/081 ,  G01N24/085 ,  G01N2021/8416 ,  G01N2201/1211 ,  G01R33/44 ,  Y10T436/166666 ,  Y10T436/216 ,  Y10T436/218

Abstract: A method and apparatus is provided for concentration determination of at least one component in an acid catalyst for hydrocarbon conversion containing an unknown concentration of an acid, an acid-soluble-oil (ASO), and water. An instrument configured for measuring a property of the acid catalyst, has responsivities to concentrations of one of the acid, ASO, and water, substantially independent of the concentrations of the others of the acid catalyst, ASO, and water. A temperature detector is configured to generate temperature data for the acid catalyst. A processor is configured to capture data generated by the temperature detector and the instrument, and to use the data in combination with a model to determine a temperature compensated concentration of the one of the acid, the ASO, and the water. Optionally, one or more other instruments configured for measuring other properties of the liquid mixture may also be used.

公开(公告)号：US09835604B2

公开(公告)日：2017-12-05

申请号：US15304216

申请日：2015-04-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Eugene Peter Gerety

IPC: G01N33/00 ,  G01N21/3504 ,  G01N21/31

CPC classification number: G01N33/0006 ,  G01N21/31 ,  G01N21/3504 ,  G01N33/004 ,  G01N2201/1211

Abstract: A target gas sensor employing a radiation source (20) and a radiation sensor (30) including a reference radiation detector (31), a target radiation detector (32), a temperature sensor (34), a temperature controller (35) and a target gas detection processor (37). In operation, radiation source (20) controls a propagation of radiation (RAD) through a gas mixture (GM) contained by an airway (10) to radiation sensor (30). Reference radiation detector (31) generates a reference detection signal (RD) indicative of a detected magnitude of a reference wavelength (λREF) of the radiation, and target radiation detector (32) generates a target detection signal (TD) indicative of a detected magnitude of a target wavelength (λTG) of the radiation. Temperature sensor (34) senses a temperature of radiation detectors (31, 32) whereby temperature controller (35) regulates a heating of the radiation detectors (31, 32) relative to a regulated detector temperature (TREG). Target gas detection processor (37) measures the target gas concentration within the sample of the gas mixture (GM) as a function of an absorbing spectral response ratio (SRRA) and a temperature compensation (TPC).